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Pentax DA* 300mm F4 ED(IF) SDM Lens
Weatherproof - Seals protect from dust, humidity and light splashing.
Fixed focal-length. No zoom.
Rectilinear are normal lenses that show straight lines as straight lines.
Thread size in milimeters for screw-on filters.77
Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Lens Description
The Pentax DA* 300mm F4 ED(IF) SDM is a super telephoto prime designed for cameras with a APS-C (1.5X) sensor. This prime has a 300mm focal-length. It provides the same field of view as a 450mm lens on a Full-Frame camera.
This prime lens focuses down to 140cm from the imaging plane, capturing subject with a maximum 0.24X magnification. The lens offers a Quick-Shift AF system which lets the user simply rotate the focus-ring to focus manually. A Super-Sonic motor inside the lens delivers very fast and relatively quiet AF.
The lens weighs 1.07kg. Its body is weatherproof against adverse weather such as rain and snow. Seals in key areas prevent entry of water and dust.
This lens is only available for the Pentax K mount. It directly attaches and is fully compatible with all Pentax K mount cameras with APS-C (1.5X) sensors.
Focal-Range
Angle-Of-View
Maximum Aperture
Viewing Angle Range
Maximum Aperture
Magnification
Weight
Pentax DA* 300mm F4 ED(IF) SDM Specifications
| Brand | Pentax | Model | DA* 300mm F4 ED(IF) SDM |
|---|---|---|---|
| Mount | Pentax K KAF2 | Max FLM | 1.5X |
| Focal Length | 300mm | View Angle | 5.4° |
| Max Aperture | F/4 | Min Aperture | F/32 |
| Min Focus | 140cm | Magnification | 0.24X |
| Filter Size | 77mm | Aperture Blades | 9 |
| Size (D x L) | 83 x 184mm | Weight | 1070g |
| Tilt | N / A | Shift | N / A |
| Stabilization | Protection | Weatherproof | |
| Zoom Drive | N / A | Focus Drive | AF with Quick-Shift |
| Zoom Mechanism | N / A | Focus Mechanism | Internal |
| Hood | Windowed | Focus Motor | Super Sonic |
| Perspective | Rectilinear | Introduced | 2011-04-06 |
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Pentax 300mm F/4 Facts
Weatherproof - Seals protect from dust, humidity and light splashing.Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Thread size in milimeters for screw-on filters.77Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).| 300mm Focal-Length | F/4 Constant Aperture |
| 77mm Filter Thread | AF with Quick-Shift |
| Pentax K Mount | APS-C (1.5X) Coverage |
| 1070g Lens Weight | 83 x 184mm (D x L) |
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